Dynamical instabilities of two-fluid interfaces in a porous medium: A three-dimensional video imaging study

Autor:	Sharma, Prerna, Aswathi, P., Sane, Anit, Ghosh, Shankar, Bhattacharya, S.
Rok vydání:	2011
Předmět:	Condensed Matter - Soft Condensed Matter
Druh dokumentu:	Working Paper
Popis:	Two-fluid interfaces in porous media, an example of driven disordered systems, were studied by a real time three-dimensional imaging technique with pore scale resolution for a less viscous fluid displacing a more viscous one. With increasing flow rate the interface transforms from flat to fingers and thence to droplets for both drainage and imbibition. The results compare and contrast the effects of randomness, both physical (geometry of the pore space) and chemical (wettability of the fluids), on the dynamical instability and identify the origin of the pore-scale processes that govern them. Comment: Supplementary movies available at http://www.tifr.res.in/~softmatter/porous.html in mov format
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1103.4234 Zobrazit plný text záznamu View this record from Arxiv